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Don Luciano

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3rd August, 2009 at 17:35:11 -

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3rd August, 2009 at 17:39:05 -

Square root-ish.

Use a graphical calculator to figure it out precisely!

 
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Don Luciano

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3rd August, 2009 at 17:42:01 -

Uh to explain, i get a number from 1-20. and i want to get from that number the certain percent.
I hope you understand, i just need some kind of formula, cause im not very good with math. So smaller numbers give a lot of % whilst far away number gives steadily nombers.
thx...

 
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3rd August, 2009 at 17:44:34 -

I'm not amazing at maths either im afraid, but i usually just fiddle about with a graph untill i get the result!

http://my.hrw.com/math06_07/nsmedia/tools/Graph_Calculator/graphCalc.html

 
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Don Luciano

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3rd August, 2009 at 20:36:49 -

Ok i found the thing i need, but how would i reverse this...

50*(5²)/20²

1 can be any number under 20
its supossed to give out the result beetween 0-50% and it does but I want it in other direction.
the increment or whats it called.

Edited by Don Luciano

 
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Sketchy

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3rd August, 2009 at 20:47:44 -

I use Excel for stuff like this.
I plot the points on a chart, tell it to add a trendline, and then get it to display the formula of the trendline.

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This looks like it should be *approximately* right:

Y = Ln( X ) * -25.901 + 97.812

Just for the sake of it, I'd probably use slighly more "round" numbers, like "Ln( X )* -25 + 100"

Edited by Sketchy

 
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Don Luciano

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3rd August, 2009 at 22:21:50 -

thx guys solved!

and it was...

50*(√(x)/√(20))

this

 
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Codemonkey

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3rd August, 2009 at 22:29:42 -

Makes me curious about what that equation does.

 
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Don Luciano

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3rd August, 2009 at 23:13:09 -

it calculates the distance for precision



Edited by Don Luciano

 
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Pixelthief

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3rd August, 2009 at 23:54:39 -

This might be slightly offtopic, but I absolutely loved the distance formula sketchy had in his snippet manager, wherever it came from:

((Max(Abs((x1 - x2)), Abs((y1 - y2)))) * 0.941246) + ((Min(Abs((x1 - x2) ), Abs((y1 - y2)))) * 0.41)

I've been using that in every single project I do now, honestly.

 
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Jon C-B

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4th August, 2009 at 00:18:39 -

what do you use it for?!?

 
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Sketchy

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4th August, 2009 at 00:29:41 -

It's for calculating the distance between two points.
For computers it's much faster than the usual method, because it doesn't use the square-root function, which is relatively slow.
However, it's always accurate to within 6%, and usually to within 3% of the actual distance.

I originally found it on wikipedia, but it doesn't seem to be there any more.
This site explains all: http://knowledgerush.com/kr/encyclopedia/Euclidean_distance/

 
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Jon C-B

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4th August, 2009 at 00:37:50 -

what kind of mathematics is that? Algebra? Calculus?

 
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Del Duio

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4th August, 2009 at 16:16:44 -


Originally Posted by Jon C-B
what do you use it for?!?



I think he used it for Gridquest to determine when some of his enemies shot projectiles at the hero. I could be wrong (??)

 
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6th August, 2009 at 03:02:13 -

I spent years trying to figure out this stuff and now someone tells me that Excel does it.

Edited by Muz

 
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